1. VMAP
  2. Data
  3. Data Dictionary
  4. Genetics
  5. APOE Genotype
  6. Count of ApoE E4 alleles
Main Category Category Variable Label Units Type Comments Derivation Level
Clinical & Demographic record_info map_id MAP ID
Clinical & Demographic Demographics age Age yr The difference, in years, between `medhx.date` and `dob`, rounded down.
Clinical & Demographic Demographics sex_factor Sex
Level Label
1 Male
2 Female
Clinical & Demographic Demographics education Education yr
Clinical & Demographic Demographics race_factor Race
Level Label
1 White/Caucasian
2 Black/African American
3 American Indian/Alaskan Native
4 Asian
5 Other
Clinical & Demographic Demographics ethnicity_factor Ethnicity
Level Label
1 Hispanic or Latino
2 Not Hispanic or Latino
Clinical & Demographic Demographics raceethnicity_factor Two-Level Race/Ethnicity Factor. When race is 1 ("White/Caucasian") and ethnicity is 0 ("Not Hispanic or Latino"), this variable will be 1 ("Non-Hispanic White"). Otherwise, this variable will be 2 ("Other"). If either race or ethnicity is missing, this variable will be NA.
Level Label
1 Non-Hispanic White
2 Other
Clinical & Demographic Demographics diagnosis_factor Cognitive Diagnosis
Level Label
1 Normal
2 Ambiguous At Risk
3 MCI
4 Dementia
Clinical & Demographic Demographics diagnosis_factor_base Baseline Cognitive Diagnosis
Level Label
1 Normal
2 Ambiguous At Risk
3 MCI
Genetics APOE Genotype alleles_factor ApoE Alleles
Level Label
1 E3/E3
2 E2/E2, E2/E3
3 E2/E4
4 E3/E4, E4/E4
Genetics APOE Genotype apoe4count Count of ApoE E4 alleles The number of ApoE E4 alleles.
Genetics APOE Genotype apoe4pos_factor APOE4 Positive Factor. If `apoe4count` is greater than zero, this variable is TRUE. If `apoe4count` is zero, this variable is FALSE. If `apoe4count` is missing, this variable is NA.
Level Label
1 No
2 Yes
Genetics APOE Genotype apoe2count Count of ApoE E2 Alleles The number of ApoE E2 alleles.
Genetics APOE Genotype apoe2pos_factor APOE2 Positive Factor. If `apoe2count` is greater than zero, this variable is TRUE. If `apoe2count` is zero, this variable is FALSE. If `apoe2count` is missing, this variable is NA.
Level Label
1 No
2 Yes
Clinical & Demographic Medical History height Physical Exam - Height cm
Clinical & Demographic Medical History weight Physical Exam - Weight kg
Clinical & Demographic Medical History bmi Physical Exam - BMI kg/m^2 `weight / (height / 100)^2`
Clinical & Demographic Medical History bsa Physical Exam - BSA m^2 `round(weight^0.425 * height^0.725 * 0.007184, 2)`
Clinical & Demographic Medical History sbp Mean of First Two Echo SBP Readings mmHg Average of `echo.sbp` and `echo.sbp2`.
Clinical & Demographic Medical History dbp Mean of First Two Echo DBP Readings mmHg Average of `echo.dbp` and `echo.dbp2`.
Clinical & Demographic Medical History pp Pulse Pressure mmHg `sbp - dbp`
Clinical & Demographic Medical History cvd_factor Cardiovascular Disease Factor. If `mhx.angina==1` or `mhx.cad==1` or `mhx.bypass==1` or `mhx.mi==1` or `mhx.hf==1` or `mhx.angio==1`, this variable is 1 ("Yes"). If `mhx.angina==0` and `mhx.cad==0` and `mhx.bypass==0` and `mhx.mi==0` and `mhx.hf==0` and `mhx.angio==0`, this variable is 0 ("No"). Otherwise, this variable is NA.
Level Label
1 No
2 Yes
Clinical & Demographic Medical History afib_factor Atrial Fibrillation Factor. If `mhx.afib` is missing and `afibecho` is missing, this variable is NA. If only `afibecho` is missing, this variable is equal to `mhx.afib`. If `afibecho==1` or `mhx.afib==1`, this variable is 1 ("Yes"). Otherwise, this variable is equal to `mhx.afib`.
Level Label
1 No
2 Yes
Clinical & Demographic Medical History diabetes_factor Diabetes Factor. If `diabetesa1c` and `diabetesrx` and `diabetesglucose` are missing, this variable is NA. If any `diabetesa1c`, `diabetesrx`, or `diabetesglucose` is 1, this variable is 1 ("Yes"). If `diabetesa1c` is 0 or missing and `diabetesrx` is 0 and `diabetesglucose` is 0, this variable is 0 ("No").
Level Label
1 No
2 Yes
Clinical & Demographic Medical History htnrx_factor Anti-Hypertensive Medication Use Factor. If the `vmac.id` is listed in the corresponding table, this variable is 1 ("Yes"). Otherwise, 2 ("No") or NA.
Level Label
1 No
2 Yes
Clinical & Demographic Medical History hypertensive_factor Hypertension Solely Based on Blood Pressure Factor. If `sbp` and `dbp` are missing, this variable is NA. If `sbp>=140` or `dbp>=90`, this variable is 1 ("Yes"). If `sbp<140` and `dbp<90`, this variable is 0 ("No"). Otherwise, this variable is NA.
Level Label
1 No
2 Yes
Clinical & Demographic Medical History htn_factor Hypertension Factor. If `hypertensive` and `htnrx` are missing, this variable is NA. If `hypertensive==1` or `htnrx==1`, this variable is 1 ("Yes"). If `hypertensive==0 and `htnrx==0`, this variable is 0 ("No"). Otherwise, this variable is NA.
Level Label
1 No
2 Yes
Clinical & Demographic Medical History currentsmoking_factor Current Smoker Factor. If `mhx.tobac==1` and `mhx.tobac.quit==-8888` or `mhx.tobac.quit >= medhx.date.year - 1`, this variable is 1 ("Yes"). Otherwise, this variable is 0 ("No"). If `mhx.tobac` is missing, this variable is NA.
Level Label
1 No
2 Yes
Clinical & Demographic Medical History dyslipidemia_factor Dyslipidemia Factor. If `bld.c.chol>=200` or `bld.c.hdlc<40` or `cholesterolrx==1`, this variable is 1 ("Yes"). If `bld.c.chol<200` and `bld.c.hdlc>=40` or `cholesterolrx==0`, this variable is 0 ("No"). Otherwise, this variable is NA.
Level Label
1 No
2 Yes
Clinical & Demographic Medical History fsrp Framingham Stroke Risk Profile Sum of `fsrp.age.pts`, `fsrp.sbp.pts`, `fsrp.diabetes.pts`, `fsrp.cigs.pts`, `fsrp.cvd.pts`, `fsrp.afib.pts`, and `fsrp.lvh.pts`.
Cognition Cognitive Complaint Module faq Functional Activities Questionnaire (10 items) If any of `faq01` to `faq10` are missing, this variable is NA. Otherwise, this variable is the sum of `faq01` to `faq10`, rounded to the nearest tenth.
Cognition Cognitive Complaint Module fcadl Functional Capacities for Activities of Daily Living (50 items) If any of `fcadl01` to `fcadl50` are missing, this variable is NA. Otherwise, this variable is the sum of `fcadl01` to `fcadl50`, rounded to the nearest tenth.
Cognition Cognitive Complaint Module cogdif_tot Cognitive Difficulties Questionnaire (41 items) If more than 15% of the variables `cogdif01` to `cogdif41` are missing, this variable is NA. Otherwise, this variable is the sum of `cogdif01` to `cogdif41`, rounded to the nearest tenth.
Cognition Cognitive Complaint Module mfq_tot Memory Functioning Questionnaire If more than 15% of the variables `mfq01.r`, `mfq02a.r`, `mfq02b.r`, `mfq02c.r`, `mfq02d.r`, `mfq02e.r`, `mfq02f.r`, `mfq02g.r`, `mfq02h.r`, `mfq02i.r`, `mfq02j.r`, `mfq02k.r`, `mfq02l.r`, `mfq02m.r`, `mfq02n.r`, `mfq02o.r`, `mfq02p.r`, `mfq02q.r`, `mfq02r.r`, `mfq03a.r`, `mfq03b.r`, `mfq03c.r`, `mfq03d.r`, `mfq03e.r`, `mfq04a.r`, `mfq04b.r`, `mfq04c.r`, `mfq04d.r`, `mfq04e.r`, `mfq05a.r`, `mfq05b.r`, `mfq05c.r`, `mfq05d.r`,`mfq06a.r`, `mfq06b.r`, `mfq06c.r`, `mfq06d.r`, `mfq06e.r`, `mfq06f.r`, `mfq06g.r`, `mfq06h.r`, `mfq06i.r`, `mfq06j.r`, `mfq06k.r`, `mfq06l.r`, `mfq06m.r`, `mfq06n.r`, `mfq06o.r`, `mfq06p.r`, `mfq06q.r`, `mfq06r.r`, `mfq08a.r`, `mfq08b.r`, `mfq08c.r`, `mfq08d.r`, and `mfq08e.r` are missing, this variable is NA. Otherwise, this variable is the sum of `mfq01.r`, `mfq02a.r`, `mfq02b.r`, `mfq02c.r`, `mfq02d.r`, `mfq02e.r`, `mfq02f.r`, `mfq02g.r`, `mfq02h.r`, `mfq02i.r`, `mfq02j.r`, `mfq02k.r`, `mfq02l.r`, `mfq02m.r`, `mfq02n.r`, `mfq02o.r`, `mfq02p.r`, `mfq02q.r`, `mfq02r.r`, `mfq03a.r`, `mfq03b.r`, `mfq03c.r`, `mfq03d.r`, `mfq03e.r`, `mfq04a.r`, `mfq04b.r`, `mfq04c.r`, `mfq04d.r`, `mfq04e.r`, `mfq05a.r`, `mfq05b.r`, `mfq05c.r`, `mfq05d.r`,`mfq06a.r`, `mfq06b.r`, `mfq06c.r`, `mfq06d.r`, `mfq06e.r`, `mfq06f.r`, `mfq06g.r`, `mfq06h.r`, `mfq06i.r`, `mfq06j.r`, `mfq06k.r`, `mfq06l.r`, `mfq06m.r`, `mfq06n.r`, `mfq06o.r`, `mfq06p.r`, `mfq06q.r`, `mfq06r.r`, `mfq08a.r`, `mfq08b.r`, `mfq08c.r`, `mfq08d.r`, and `mfq08e.r` with mean imputation, rounded to the nearest tenth.
Cognition Cognitive Complaint Module ecogself_tot Everyday Self Cognition If more than 15% of the variables `ecogself.mem01`, `ecogself.mem02`, `ecogself.mem03`, `ecogself.mem04`, `ecogself.mem05`, `ecogself.mem06`, `ecogself.mem07`, `ecogself.mem08`, `ecogself.lang01`, `ecogself.lang02`, `ecogself.lang03`, `ecogself.lang04`, `ecogself.lang05`, `ecogself.lang06`, `ecogself.lang07`, `ecogself.lang08`, `ecogself.lang09`, `ecogself.vis01`, `ecogself.vis02`, `ecogself.vis03`, `ecogself.vis04`, `ecogself.vis05`, `ecogself.vis06`, `ecogself.vis07`, `ecogself.plan01`, `ecogself.plan02`, `ecogself.plan03`, `ecogself.plan04`, `ecogself.plan05`, `ecogself.org01`, `ecogself.org02`, `ecogself.org03`, `ecogself.org04`, `ecogself.org05`, `ecogself.org06`, `ecogself.attn01`, `ecogself.attn02`, `ecogself.attn03`, and `ecogself.attn04` are missing, this variable is NA. Otherwise, this variable is the sum of `ecogself.mem01`, `ecogself.mem02`, `ecogself.mem03`, `ecogself.mem04`, `ecogself.mem05`, `ecogself.mem06`, `ecogself.mem07`, `ecogself.mem08`, `ecogself.lang01`, `ecogself.lang02`, `ecogself.lang03`, `ecogself.lang04`, `ecogself.lang05`, `ecogself.lang06`, `ecogself.lang07`, `ecogself.lang08`, `ecogself.lang09`, `ecogself.vis01`, `ecogself.vis02`, `ecogself.vis03`, `ecogself.vis04`, `ecogself.vis05`, `ecogself.vis06`, `ecogself.vis07`, `ecogself.plan01`, `ecogself.plan02`, `ecogself.plan03`, `ecogself.plan04`, `ecogself.plan05`, `ecogself.org01`, `ecogself.org02`, `ecogself.org03`, `ecogself.org04`, `ecogself.org05`, `ecogself.org06`, `ecogself.attn01`, `ecogself.attn02`, `ecogself.attn03`, and `ecogself.attn04` with mean imputation, rounded to the nearest tenth.
Fluid Biomarkers Cerebrospinal Fluid (CSF) Research Biomarkers csf_msdabtriplex_abx42_2014 CSF Abeta42 (MSD Abeta Triplex, 2014) pg/mL
Fluid Biomarkers Cerebrospinal Fluid (CSF) Research Biomarkers csf_msdabtriplex_abx40_2014 CSF Abeta40 (MSD Abeta Triplex, 2014) pg/mL
Fluid Biomarkers Cerebrospinal Fluid (CSF) Research Biomarkers csf_msdabtriplex_abx42_abx40_ratio CSF Abeta42/Abeta40 Ratio (MSD Abeta Triplex, 2014)
Fluid Biomarkers Cerebrospinal Fluid (CSF) Research Biomarkers csf_innotest_ab1_42_2014 CSF Abeta 1-42 (Fujirebio INNOTEST ELISA, 2014) pg/mL
Fluid Biomarkers Cerebrospinal Fluid (CSF) Research Biomarkers csf_innotest_tau_2014 CSF Total tau (Fujirebio INNOTEST ELISA, 2014) pg/mL
Fluid Biomarkers Cerebrospinal Fluid (CSF) Research Biomarkers csf_innotest_ptau_2014 CSF p-tau (Fujirebio INNOTEST ELISA, 2014) pg/mL
Fluid Biomarkers Cerebrospinal Fluid (CSF) Research Biomarkers csf_umandiagnostics_nfl_2016 CSF Neurofilament Light (UmanDiagnostics, 2016) pg/mL
Fluid Biomarkers Cerebrospinal Fluid (CSF) Research Biomarkers csf_elisang36_neurogranin_2016 CSF Neurogranin (ELISA Ng36, 2016) pg/mL
Fluid Biomarkers Cerebrospinal Fluid (CSF) Research Biomarkers csf_rdsystemselisa_ykl40_2016 CSF YKL-40 (R&D System ELISA, 2016) pg/mL
Fluid Biomarkers Cerebrospinal Fluid (CSF) Research Biomarkers csf_fujirebionm4elisa_gap43_2018 CSF GAP-43 (Fujirebio ELISA NM4, 2018) pg/mL
Fluid Biomarkers Cerebrospinal Fluid (CSF) Research Biomarkers csf_beckmancoulter_immage_albumin_2018 CSF Albumin (Beckman Coulter IMMAGE, 2018) g/L
Fluid Biomarkers Cerebrospinal Fluid (CSF) Research Biomarkers csf_beckmancoulter_immage_plasma_albumin_ratio_2018 CSF/Plasma Albumin Ratio (Beckman Coulter IMMAGE, 2018)
Fluid Biomarkers Cerebrospinal Fluid (CSF) Research Biomarkers csf_msdassay_strem2_2018 CSF sTREM2 (MSD Assay, 2018) pg/mL
Fluid Biomarkers Cerebrospinal Fluid (CSF) Research Biomarkers csf_rdsystems_brevican_2019 CSF Brevican (R&D System, 2019) ng/mL
Fluid Biomarkers Cerebrospinal Fluid (CSF) Research Biomarkers csf_rdsystems_timp1_2019 CSF TIMP1 (R&D System, 2019) pg/mL
Fluid Biomarkers Cerebrospinal Fluid (CSF) Research Biomarkers csf_rdsystems_timp2_2019 CSF TIMP2 (R&D System, 2019) pg/mL
Fluid Biomarkers Cerebrospinal Fluid (CSF) Research Biomarkers csf_rdsystems_mmp2_2019 CSF MMP2 (R&D System, 2019) pg/mL
Fluid Biomarkers Cerebrospinal Fluid (CSF) Research Biomarkers csf_mesoscalediscoverymmp3plex_mmp3_2019 CSF MMP3 (Meso Scale Discovery Multiplex Assay, 2019) pg/mL
Fluid Biomarkers Cerebrospinal Fluid (CSF) Research Biomarkers csf_mesoscalediscoverymmp3plex_mmp9_2019 CSF MMP9 (Meso Scale Discovery Multiplex Assay, 2019) pg/mL
Fluid Biomarkers Cerebrospinal Fluid (CSF) Research Biomarkers csf_fujirebio_ab40_2022 CSF Abeta40 (Fujirebio Lumipulse, 2022) pg/mL
Fluid Biomarkers Cerebrospinal Fluid (CSF) Research Biomarkers csf_fujirebio_ab42_2022 CSF Abeta42 (Fujirebio Lumipulse, 2022) pg/mL
Fluid Biomarkers Cerebrospinal Fluid (CSF) Research Biomarkers csf_fujirebio_tau_2022 CSF Total tau (Fujirebio Lumipulse, 2022) pg/mL
Fluid Biomarkers Cerebrospinal Fluid (CSF) Research Biomarkers csf_fujirebio_ptau_2022 CSF p-tau (Fujirebio Lumipulse, 2022) pg/mL
Fluid Biomarkers Cerebrospinal Fluid (CSF) Research Biomarkers csf_rdsystemselisa_ykl40_2022 CSF YKL-40 (R&D System ELISA, 2022) ng/mL
Fluid Biomarkers Cerebrospinal Fluid (CSF) Research Biomarkers csf_mesoscalediscoveryecl_strem2_2022 CSF sTREM2 (Meso Scale Discovery ECL, 2022) pg/mL
Fluid Biomarkers Cerebrospinal Fluid (CSF) Research Biomarkers csf_thermofisherelisa_pdgfrb_2022 CSF PDGFR Beta (Thermo Fisher ELISA, 2022) pg/mL
Fluid Biomarkers Cerebrospinal Fluid (CSF) Research Biomarkers csf_cobas_albumin_2022 CSF Albumin (ROCHE COBAS, 2022) g/L
Fluid Biomarkers Cerebrospinal Fluid (CSF) Research Biomarkers csf_elisa_nfl21nfl223_2022 CSF Neurofilament Light (ELISA NfL21 NfL23, 2022) pg/mL
Fluid Biomarkers Cerebrospinal Fluid (CSF) Research Biomarkers csf_elisang36_neurogranin_2022 CSF Neurogranin (ELISA Ng36, 2022) pg/mL
Fluid Biomarkers Cerebrospinal Fluid (CSF) Research Biomarkers csf_mesoscalediscoveryecl_timp1_2022 CSF TIMP1 (Meso Scale Discovery ECL, 2022) pg/mL
Fluid Biomarkers Cerebrospinal Fluid (CSF) Research Biomarkers csf_mesoscalediscoveryecl_timp2_2022 CSF TIMP2 (Meso Scale Discovery ECL, 2022) pg/mL
Fluid Biomarkers Cerebrospinal Fluid (CSF) Research Biomarkers csf_mesoscalediscoverymmp3plex_mmp2_2022 CSF MMP2 (Meso Scale Discovery Multiplex Assay, 2022) pg/mL
Fluid Biomarkers Cerebrospinal Fluid (CSF) Research Biomarkers csf_mesoscalediscoverymmp3plex_mmp3_2022 CSF MMP3 (Meso Scale Discovery Multiplex Assay, 2022) pg/mL
Fluid Biomarkers Cerebrospinal Fluid (CSF) Research Biomarkers csf_mesoscalediscoverymmp3plex_mmp9_2022 CSF MMP9 (Meso Scale Discovery Multiplex Assay, 2022) pg/mL
Fluid Biomarkers Cerebrospinal Fluid (CSF) Research Biomarkers csf_mesoscalediscovery_flt1_2022 CSF Flt1 (Meso Scale Discovery, 2022) pg/mL
Fluid Biomarkers Cerebrospinal Fluid (CSF) Research Biomarkers csf_raybiotech_elisa_brevican_2022 CSF Brevican (RayBiotech ELISA, 2022) ng/mL
Fluid Biomarkers Cerebrospinal Fluid (CSF) Research Biomarkers csf_upenn_innobiaalzbio3_ab1_42_2015 CSF Abeta 1-42 (INNO-BIA AlzBio3, 2015) pg/mL
Fluid Biomarkers Cerebrospinal Fluid (CSF) Research Biomarkers csf_upenn_innobiaalzbio3_tau_2015 CSF Total tau (INNO-BIA AlzBio3, 2015) pg/mL
Fluid Biomarkers Cerebrospinal Fluid (CSF) Research Biomarkers csf_upenn_innobiaalzbio3_ptau_2015 CSF p-tau (INNO-BIA AlzBio3, 2015) pg/mL
Fluid Biomarkers Cerebrospinal Fluid (CSF) Research Biomarkers csf_upenn_innobiaalzbio3_tau_ab1_42_ratio_2015 CSF Total tau/Abeta 1-42 Ratio (INNO-BIA AlzBio3, 2015)
Fluid Biomarkers Cerebrospinal Fluid (CSF) Research Biomarkers csf_upenn_innobiaalzbio3_ptau_ab1_42_ratio_2015 CSF p-tau/Abeta 1-42 Ratio (INNO-BIA AlzBio3, 2015)
Fluid Biomarkers Cerebrospinal Fluid (CSF) Research Biomarkers csf_lumipulse_snap_2022_factor CSF SNAP (Fujirebio Lumipulse, 2022)
Level Label
1 AB-/tau-
2 AB+/tau-
3 AB-/tau+
4 AB+/tau+
Fluid Biomarkers Cerebrospinal Fluid (CSF) Research Biomarkers csf_lumipulse_ab42_40_2022_ratio_positive_factor CSF Abeta42/Abeta40 Ratio Positive (Fujirebio Lumipulse, 2022)
Level Label
1 No
2 Yes
Fluid Biomarkers Cerebrospinal Fluid (CSF) Research Biomarkers csf_lumipulse_ab42_40_2022_ratio CSF Abeta42/Abeta40 Ratio (Fujirebio Lumipulse, 2022)
Fluid Biomarkers Cerebrospinal Fluid (CSF) Research Biomarkers csf_lumipulse_ptau_2022_positive_factor CSF p-tau Positive (Fujirebio Lumipulse, 2022)
Level Label
1 No
2 Yes
Fluid Biomarkers Cerebrospinal Fluid (CSF) Research Biomarkers csf_lumipulse_tau_2022_positive_factor CSF Total tau Positive (Fujirebio Lumipulse, 2022)
Level Label
1 No
2 Yes
Fluid Biomarkers Cerebrospinal Fluid (CSF) Research Biomarkers csf_lumipulse_ab42_2022_positive_factor CSF Abeta42 Positive (Fujirebio Lumipulse, 2022)
Level Label
1 No
2 Yes
Fluid Biomarkers Cerebrospinal Fluid (CSF) Research Biomarkers csf_innotest_snap_2014_factor CSF SNAP (Fujirebio INNOTEST ELISA, 2014)
Level Label
1 AB-/tau-
2 AB+/tau-
3 AB-/tau+
4 AB+/tau+
Fluid Biomarkers Cerebrospinal Fluid (CSF) Research Biomarkers csf_msdabtriplex_abx42_40_2014_ratio CSF Abeta42/Abeta40 Ratio (Triplex MSD-measurements, 2014)
Fluid Biomarkers Cerebrospinal Fluid (CSF) Research Biomarkers csf_innotest_ptau_2014_positive_factor CSF p-tau Positive (Fujirebio INNOTEST ELISA, 2014)
Level Label
1 No
2 Yes
Fluid Biomarkers Cerebrospinal Fluid (CSF) Research Biomarkers csf_innotest_tau_2014_positive_factor CSF Total tau Positive (Fujirebio INNOTEST ELISA, 2014)
Level Label
1 No
2 Yes
Fluid Biomarkers Cerebrospinal Fluid (CSF) Research Biomarkers csf_innotest_ab1_42_2014_positive_factor CSF Abeta 1-42 Positive (Fujirebio INNOTEST ELISA, 2014)
Level Label
1 No
2 Yes
Fluid Biomarkers Blood-based Research Biomarkers biomarkers_milliplex_leptin_plasma_2015 Plasma Leptin (MILLIPLEX, 2015) pg/mL
Fluid Biomarkers Blood-based Research Biomarkers biomarkers_milliplex_il6_plasma_2015 Plasma IL-6 (MILLIPLEX, 2015) pg/mL
Fluid Biomarkers Blood-based Research Biomarkers biomarkers_milliplex_tnfalpha_plasma_2015 Plasma TNFalpha (MILLIPLEX, 2015) pg/mL
Fluid Biomarkers Blood-based Research Biomarkers biomarkers_milliplex_vegf_plasma_2015 Plasma VEGF (MILLIPLEX, 2015) pg/mL
Fluid Biomarkers Blood-based Research Biomarkers biomarkers_milliplex_vegf_serum_2016 Serum VEGF (MILLIPLEX, 2015) pg/mL
Fluid Biomarkers Blood-based Research Biomarkers biomarkers_simoa_umandiagnostics_nfl_plasma_2018 Plasma Neurofilament Light (UmanDiagnostics Simoa, 2018) pg/mL
Fluid Biomarkers Blood-based Research Biomarkers biomarkers_quanterix_tau_plasma_2018 Plasma Tau (Quanterix, 2018) pg/mL
Fluid Biomarkers Blood-based Research Biomarkers biomarkers_innotest_ab1_42_plasma_2018 Plasma Abeta 1-42 (Fujirebio INNOTEST ELISA, 2018) pg/mL
Fluid Biomarkers Blood-based Research Biomarkers biomarkers_msdabetatriplex_abx40_plasma_2018 Plasma Abeta X-40 (MSD Abeta Triplex, 2018) pg/mL
Fluid Biomarkers Blood-based Research Biomarkers biomarkers_beckmancoulter_immage_albumin_plasma_2019 Plasma Albumin (Beckman Coulter IMMAGE, 2019) g/L
Fluid Biomarkers Blood-based Research Biomarkers biomarkers_quanterixsimoa_ab40_plasma_2022 Plasma Abeta40 (Quanterix Simoa, 2022) pg/mL
Fluid Biomarkers Blood-based Research Biomarkers biomarkers_quanterixsimoa_ab42_plasma_2022 Plasma Abeta42 (Quanterix Simoa, 2022) pg/mL
Fluid Biomarkers Blood-based Research Biomarkers biomarkers_quanterixsimoa_nfl_plasma_2022 Plasma Neurofilament Light (Quanterix Simoa, 2022) pg/mL
Fluid Biomarkers Blood-based Research Biomarkers biomarkers_cobas_albumin_plasma_2022 Plasma Albumin (ROCHE COBAS, 2022) g/L
Fluid Biomarkers Blood-based Research Biomarkers biomarkers_thermofisherelisa_pdgfrb_plasma_2022 Plasma PDGFR Beta (Thermo Fisher ELISA, 2022) pg/mL
Fluid Biomarkers Blood-based Research Biomarkers biomarkers_quanterixsimoa_gfap_plasma_2022 Plasma GFAP (Quanterix Simoa, 2022) pg/mL
Fluid Biomarkers Blood-based Research Biomarkers biomarkers_quanterixsimoa_ptau231_plasma_2022 Plasma p-tau 231 (Quanterix Simoa, 2022) pg/mL
Fluid Biomarkers Blood-based Research Biomarkers biomarkers_mesoscalediscovery_flt1_plasma_2022 Plasma Flt1 (Meso Scale Discovery, 2022) pg/mL
Cardiac Imaging Cardiac Structure and Function -- Echocardiogram echo_hrate Echo - Heart Rate bpm
Cardiac Imaging Cardiac Structure and Function -- Echocardiogram echo_lv_stroke_volume Echo - Stroke Volume mL `3.14159 * ((echo.lvot / 2)^2) * echo.lvot.vti`
Cardiac Imaging Cardiac Structure and Function -- Echocardiogram echo_lvot Echo - LV Outflow Tract cm
Cardiac Imaging Cardiac Structure and Function -- Echocardiogram echo_co_calc Echo - Cardiac Output L/min `3.14159 * ((echo.lvot / 2)^2) * echo.lvot.vti * echo.hrate / 1000`
Cardiac Imaging Cardiac Structure and Function -- Echocardiogram echo_cardiac_index Echo - Cardiac Index m^2 `echo.co.calc / bsa`
Cardiac Imaging Cardiac Structure and Function -- Echocardiogram echo_edv Echo - End Diastolic Volume mL
Cardiac Imaging Cardiac Structure and Function -- Echocardiogram echo_esv Echo - End Systolic Volume mL
Cardiac Imaging Cardiac Structure and Function -- Echocardiogram echo_ef_calc Echo - Left Ventricular Ejection Fraction % `(echo.edv - echo.esv) / echo.edv * 100`
Cardiac Imaging Cardiac Structure and Function -- Echocardiogram echo_lvh_factor Echo - Left Ventricular Hypertrophy Factor. If `sex.factor` or `echo.lvmass.scaled.integer` is missing, this variable is NA. If `sex.factor` is "Female" and `echo.lvmass.scaled.integer <= 95`, this variable is 0 ("No"). If `sex.factor` is "Female" and `echo.lvmass.scaled.integer > 95`, this variable is 1 ("Yes"). If `sex.factor` is "Male" and `echo.lvmass.scaled.integer <= 115`, this variable is 0 ("No"). Otherwise, this variable is 1 ("Yes").
Level Label
1 No
2 Yes
Cardiac Imaging Cardiac Structure and Function -- Echocardiogram echo_lvmass Echo - Left Ventricular Mass g `round(0.8 * 1.04 * ((echo.lvidd + echo.lvpwd + echo.ivsd)^3 - echo.lvidd^3) + 0.6, 2)`
Cardiac Imaging Cardiac Structure and Function -- MRI pwv Pulse Wave Velocity m/s
Cardiac Imaging Cardiac Strain -- MRI qstrain_2ch_myogls Global Longitudinal Strain %
Cardiac Imaging Cardiac Strain -- MRI qstrain_2ch_myogcs Global Circumferential Strain %
Cognition Neuropsychological Assessment np_moca Montreal Cognitive Assessment Test
Cognition Neuropsychological Assessment np_bnt Boston Naming Test (30 Item)
Cognition Neuropsychological Assessment np_anim Animal Naming If any of the the variables `np.anim.q1` to `np.anim.q4` are missing, this variable is NA. Otherwise, this variable is the sum of `np.anim.q1` to `np.anim.q4`.
Cognition Neuropsychological Assessment np_tmta Number Sequencing
Cognition Neuropsychological Assessment np_digsymb Coding
Cognition Neuropsychological Assessment np_executive_composite Executive Function Composite Derived by Dandan Liu in MPlus
Cognition Neuropsychological Assessment np_tower DKEFS Tower Test If all of the variables `np.tower01` to `np.tower10` are missing, this variable is NA. Otherwise, this variable is the sum of `np.tower01` to `np.tower10` excluding any missing values.
Cognition Neuropsychological Assessment np_inhibit Color-Word Inhibition
Cognition Neuropsychological Assessment np_fas FAS, Total
Cognition Neuropsychological Assessment np_tmtb Letter-Number Switching
Cognition Neuropsychological Assessment np_hvot Hooper Visual Organization Test
Cognition Neuropsychological Assessment np_memory_composite Memory Composite Score Derived by Dandan Liu in MPlus
Cognition Neuropsychological Assessment np_biber_t1to5 BFLT Trial 1-5 Learning If any of the the variables `np.biber1` to `np.biber5` are missing, this variable is NA. Otherwise, this variable is the sum of `np.biber1` to `np.biber5`.
Cognition Neuropsychological Assessment np_biber_ld BFLT Long Delayed Free Recall
Cognition Neuropsychological Assessment np_biber_discrim BFLT Recognition, Total
Cognition Neuropsychological Assessment np_cvlt1to5 CVLT-II Trial 1-5 Learning
Cognition Neuropsychological Assessment np_cvlt_ldfr CVLT-II Long Delayed Free Recall
Cognition Neuropsychological Assessment np_cvltrecog_discrim CVLT-II Recognition
Brain Imaging Brain MRI: White Matter Hyperintensities (FLAIR) wml_volume White Matter Lesion Volume cm^3
Brain Imaging Brain MRI: White Matter Hyperintensities (FLAIR) wml_volume_left_hemisphere White Matter Lesion Volume Left Hemisphere Volume cm^3
Brain Imaging Brain MRI: White Matter Hyperintensities (FLAIR) wml_volume_right_hemisphere White Matter Lesion Volume Right Hemisphere Volume cm^3
Brain Imaging Brain MRI: White Matter Hyperintensities (FLAIR) wml_volume_left_frontal_lobe White Matter Lesion Volume Left Frontal Lobe Volume cm^3
Brain Imaging Brain MRI: White Matter Hyperintensities (FLAIR) wml_volume_right_frontal_lobe White Matter Lesion Volume Right Frontal Lobe Volume cm^3
Brain Imaging Brain MRI: White Matter Hyperintensities (FLAIR) wml_volume_left_temporal_lobe White Matter Lesion Volume Left Temporal Lobe Volume cm^3
Brain Imaging Brain MRI: White Matter Hyperintensities (FLAIR) wml_volume_right_temporal_lobe White Matter Lesion Volume Right Temporal Lobe Volume cm^3
Brain Imaging Brain MRI: White Matter Hyperintensities (FLAIR) wml_volume_left_parietal_lobe White Matter Lesion Volume Left Parital Lobe Volume cm^3
Brain Imaging Brain MRI: White Matter Hyperintensities (FLAIR) wml_volume_right_parietal_lobe White Matter Lesion Volume Right Parietal Lobe Volume cm^3
Brain Imaging Brain MRI: White Matter Hyperintensities (FLAIR) wml_volume_left_occipital_lobe White Matter Lesion Volume Left Occipital Lobe Volume cm^3
Brain Imaging Brain MRI: White Matter Hyperintensities (FLAIR) wml_volume_right_occipital_lobe White Matter Lesion Volume Right Occipital Lobe Volume cm^3
Brain Imaging Brain MRI: Grey Matter Volume (T1) ma_grey_matter Grey Matter Volume mm^3
Brain Imaging Brain MRI: Grey Matter Volume (T1) ma_left_hemisphere Grey Matter Volume Left Hemisphere Volume mm^3
Brain Imaging Brain MRI: Grey Matter Volume (T1) ma_right_hemisphere Grey Matter Volume Right Hemisphere Volume mm^3
Brain Imaging Brain MRI: Grey Matter Volume (T1) ma_left_frontal_lobe_vol Grey Matter Volume Left Frontal Lobe Volume mm^3
Brain Imaging Brain MRI: Grey Matter Volume (T1) ma_right_frontal_lobe_vol Grey Matter Volume Right Frontal Lobe Volume mm^3
Brain Imaging Brain MRI: Grey Matter Volume (T1) ma_left_temporal_lobe_vol Grey Matter Volume Left Temporal Lobe Volume mm^3
Brain Imaging Brain MRI: Grey Matter Volume (T1) ma_right_temporal_lobe_vol Grey Matter Volume Right Temporal Lobe Volume mm^3
Brain Imaging Brain MRI: Grey Matter Volume (T1) ma_left_parietal_lobe_vol Grey Matter Volume Left Parietal Lobe Volume mm^3
Brain Imaging Brain MRI: Grey Matter Volume (T1) ma_right_parietal_lobe_vol Grey Matter Volume Right Parietal Lobe Volume mm^3
Brain Imaging Brain MRI: Grey Matter Volume (T1) ma_left_occipital_lobe_vol Grey Matter Volume Left Occipital Lobe Volume mm^3
Brain Imaging Brain MRI: Grey Matter Volume (T1) ma_right_occipital_lobe_vol Grey Matter Volume Right Occipital Lobe Volume mm^3
Brain Imaging Brain MRI: Grey Matter Volume (T1) ma_lh_hippocampus_vol Grey Matter Volume Left Hippocampus Volume mm^3
Brain Imaging Brain MRI: Grey Matter Volume (T1) ma_rh_hippocampus_vol Grey Matter Volume Right Hippocampus Volume mm^3
Brain Imaging Brain MRI: Grey Matter Volume (T1) ma_lh_precuneus_vol Grey Matter Volume Left Precuneus precuneus Volume mm^3
Brain Imaging Brain MRI: Grey Matter Volume (T1) ma_rh_precuneus_vol Grey Matter Volume Right Precuneus precuneus Volume mm^3
Brain Imaging Brain MRI: Grey Matter Volume (T1) ma_lh_g_parahippocampal_vol Grey Matter Volume Left PHG Parahippocampal Gyrus Volume mm^3
Brain Imaging Brain MRI: Grey Matter Volume (T1) ma_rh_g_parahippocampal_vol Grey Matter Volume Right PHG Parahippocampal Gyrus Volume mm^3
Brain Imaging Brain MRI: Grey Matter Volume (T1) ma_lh_entorhinal_area Grey Matter Volume Left Entorhinal Area Volume mm^3
Brain Imaging Brain MRI: Grey Matter Volume (T1) ma_rh_entorhinal_area Grey Matter Volume Right Entorhinal Area Volume mm^3
Brain Imaging Brain MRI: Grey Matter Volume (T1) ma_lh_inf_lat_vent_vol Grey Matter Volume Left Inferior Lateral Ventricle Volume mm^3
Brain Imaging Brain MRI: Grey Matter Volume (T1) ma_rh_inf_lat_vent_vol Grey Matter Volume Right Inferior Lateral Ventricle Volume mm^3
Brain Imaging Diffusion Tensor Imaging dti_tbss_fnirt_fa_middle_occipital_tcatt DTI ROI TBSS FNIRT Fractional Anisotropy Middle Occipital Gyrus Transcallosal Tract Template 10^-3 mm^2/s
Brain Imaging Diffusion Tensor Imaging dti_tbss_fnirt_md_middle_occipital_tcatt DTI ROI TBSS FNIRT Mean Diffusivity Middle Occipital Gyrus Transcallosal Tract Template 10^-3 mm^2/s
Brain Imaging Diffusion Tensor Imaging dti_tbss_fnirt_rd_middle_occipital_tcatt DTI ROI TBSS FNIRT Radial Diffusivity Middle Occipital Gyrus Transcallosal Tract Template 10^-3 mm^2/s
Brain Imaging Diffusion Tensor Imaging dti_tbss_fnirt_ad_middle_occipital_tcatt DTI ROI TBSS FNIRT Axial Diffusivity Middle Occipital Gyrus Transcallosal Tract Template 10^-3 mm^2/s
Brain Imaging Diffusion Tensor Imaging dti_tbss_fnirt_fa_middle_frontal_tcatt DTI ROI TBSS FNIRT Fractional Anisotropy Middle Frontal Gyrus Transcallosal Tract Template 10^-3 mm^2/s
Brain Imaging Diffusion Tensor Imaging dti_tbss_fnirt_md_middle_frontal_tcatt DTI ROI TBSS FNIRT Mean Diffusivity Middle Frontal Gyrus Transcallosal Tract Template 10^-3 mm^2/s
Brain Imaging Diffusion Tensor Imaging dti_tbss_fnirt_rd_middle_frontal_tcatt DTI ROI TBSS FNIRT Radial Diffusivity Middle Frontal Gyrus Transcallosal Tract Template 10^-3 mm^2/s
Brain Imaging Diffusion Tensor Imaging dti_tbss_fnirt_ad_middle_frontal_tcatt DTI ROI TBSS FNIRT Axial Diffusivity Middle Frontal Gyrus Transcallosal Tract Template 10^-3 mm^2/s
Brain Imaging Diffusion Tensor Imaging dti_tbss_fnirt_fa_superior_parietal_tcatt DTI ROI TBSS FNIRT Fractional Anisotropy Superior Parietal Gyrus Transcallosal Tract Template 10^-3 mm^2/s
Brain Imaging Diffusion Tensor Imaging dti_tbss_fnirt_md_superior_parietal_tcatt DTI ROI TBSS FNIRT Mean Diffusivity Superior Parietal Gyrus Transcallosal Tract Template 10^-3 mm^2/s
Brain Imaging Diffusion Tensor Imaging dti_tbss_fnirt_rd_superior_parietal_tcatt DTI ROI TBSS FNIRT Radial Diffusivity Superior Parietal Gyrus Transcallosal Tract Template 10^-3 mm^2/s
Brain Imaging Diffusion Tensor Imaging dti_tbss_fnirt_ad_superior_parietal_tcatt DTI ROI TBSS FNIRT Axial Diffusivity Superior Parietal Gyrus Transcallosal Tract Template 10^-3 mm^2/s
Brain Imaging Diffusion Tensor Imaging dti_tbss_fnirt_fa_middle_temporal_tcatt DTI ROI TBSS FNIRT Fractional Anisotropy Middle Temporal Gyrus Transcallosal Tract Template 10^-3 mm^2/s
Brain Imaging Diffusion Tensor Imaging dti_tbss_fnirt_md_middle_temporal_tcatt DTI ROI TBSS FNIRT Mean Diffusivity Middle Temporal Gyrus Transcallosal Tract Template 10^-3 mm^2/s
Brain Imaging Diffusion Tensor Imaging dti_tbss_fnirt_rd_middle_temporal_tcatt DTI ROI TBSS FNIRT Radial Diffusivity Middle Temporal Gyrus Transcallosal Tract Template 10^-3 mm^2/s
Brain Imaging Diffusion Tensor Imaging dti_tbss_fnirt_ad_middle_temporal_tcatt DTI ROI TBSS FNIRT Axial Diffusivity Middle Temporal Gyrus Transcallosal Tract Template 10^-3 mm^2/s
Brain Imaging Diffusion Tensor Imaging dti_tbss_fnirt_fa_cingulum DTI ROI TBSS FNIRT Fractional Anisotropy Cingulum 10^-3 mm^2/s
Brain Imaging Diffusion Tensor Imaging dti_tbss_fnirt_md_cingulum DTI ROI TBSS FNIRT Mean Diffusivity Cingulum 10^-3 mm^2/s
Brain Imaging Diffusion Tensor Imaging dti_tbss_fnirt_rd_cingulum DTI ROI TBSS FNIRT Radial Diffusivity Cingulum 10^-3 mm^2/s
Brain Imaging Diffusion Tensor Imaging dti_tbss_fnirt_ad_cingulum DTI ROI TBSS FNIRT Axial Diffusivity Cingulum 10^-3 mm^2/s
Brain Imaging Diffusion Tensor Imaging dti_tbss_fnirt_fa_uf DTI ROI TBSS FNIRT Fractional Anisotropy Uncinate Fasiculus 10^-3 mm^2/s
Brain Imaging Diffusion Tensor Imaging dti_tbss_fnirt_md_uf DTI ROI TBSS FNIRT Mean Diffusivity Uncinate Fasiculus 10^-3 mm^2/s
Brain Imaging Diffusion Tensor Imaging dti_tbss_fnirt_rd_uf DTI ROI TBSS FNIRT Radial Diffusivity Uncinate Fasiculus 10^-3 mm^2/s
Brain Imaging Diffusion Tensor Imaging dti_tbss_fnirt_ad_uf DTI ROI TBSS FNIRT Axial Diffusivity Uncinate Fasiculus 10^-3 mm^2/s
Brain Imaging Diffusion Tensor Imaging dti_tbss_fnirt_fa_slf DTI ROI TBSS FNIRT Fractional Anisotropy Superior Longitudinal Fasiculus 10^-3 mm^2/s
Brain Imaging Diffusion Tensor Imaging dti_tbss_fnirt_md_slf DTI ROI TBSS FNIRT Mean Diffusivity Superior Longitudinal Fasiculus 10^-3 mm^2/s
Brain Imaging Diffusion Tensor Imaging dti_tbss_fnirt_rd_slf DTI ROI TBSS FNIRT Radial Diffusivity Superior Longitudinal Fasiculus 10^-3 mm^2/s
Brain Imaging Diffusion Tensor Imaging dti_tbss_fnirt_ad_slf DTI ROI TBSS FNIRT Axial Diffusivity Superior Longitudinal Fasiculus 10^-3 mm^2/s
Brain Imaging Diffusion Tensor Imaging dti_tbss_fnirt_fa_ilf DTI ROI TBSS FNIRT Fractional Anisotropy Inferior Longitudinal Fasiculus 10^-3 mm^2/s
Brain Imaging Diffusion Tensor Imaging dti_tbss_fnirt_md_ilf DTI ROI TBSS FNIRT Mean Diffusivity Inferior Longitudinal Fasiculus 10^-3 mm^2/s
Brain Imaging Diffusion Tensor Imaging dti_tbss_fnirt_rd_ilf DTI ROI TBSS FNIRT Radial Diffusivity Inferior Longitudinal Fasiculus 10^-3 mm^2/s
Brain Imaging Diffusion Tensor Imaging dti_tbss_fnirt_ad_ilf DTI ROI TBSS FNIRT Axial Diffusivity Inferior Longitudinal Fasiculus 10^-3 mm^2/s
Brain Imaging Diffusion Tensor Imaging dti_fw_ants_superior_parietal_tcatt DTI ROI Freewater ANTS Superior Parietal Gyrus Transcallosal Tract Template 10^-3 mm^2/s
Brain Imaging Diffusion Tensor Imaging dti_fw_ants_fa_superior_parietal_tcatt_corrected DTI ROI Freewater ANTS Fractional Anisotropy Superior Parietal Gyrus Transcallosal Tract Template Corrected 10^-3 mm^2/s
Brain Imaging Diffusion Tensor Imaging dti_fw_ants_md_superior_parietal_tcatt_corrected DTI ROI Freewater ANTS Mean Diffusivity Superior Parietal Gyrus Transcallosal Tract Template Corrected 10^-3 mm^2/s
Brain Imaging Diffusion Tensor Imaging dti_fw_ants_rd_superior_parietal_tcatt_corrected DTI ROI Freewater ANTS Radial Diffusivity Superior Parietal Gyrus Transcallosal Tract Template Corrected 10^-3 mm^2/s
Brain Imaging Diffusion Tensor Imaging dti_fw_ants_ad_superior_parietal_tcatt_corrected DTI ROI Freewater ANTS Axial Diffusivity Superior Parietal Gyrus Transcallosal Tract Template Corrected 10^-3 mm^2/s
Brain Imaging Diffusion Tensor Imaging dti_fw_ants_middle_occipital_tcatt DTI ROI Freewater ANTS Middle Occipital Gyrus Transcallosal Tract Template 10^-3 mm^2/s
Brain Imaging Diffusion Tensor Imaging dti_fw_ants_fa_middle_occipital_tcatt_corrected DTI ROI Freewater ANTS Fractional Anisotropy Middle Occipital Gyrus Transcallosal Tract Template Corrected 10^-3 mm^2/s
Brain Imaging Diffusion Tensor Imaging dti_fw_ants_md_middle_occipital_tcatt_corrected DTI ROI Freewater ANTS Mean Diffusivity Middle Occipital Gyrus Transcallosal Tract Template Corrected 10^-3 mm^2/s
Brain Imaging Diffusion Tensor Imaging dti_fw_ants_rd_middle_occipital_tcatt_corrected DTI ROI Freewater ANTS Radial Diffusivity Middle Occipital Gyrus Transcallosal Tract Template Corrected 10^-3 mm^2/s
Brain Imaging Diffusion Tensor Imaging dti_fw_ants_ad_middle_occipital_tcatt_corrected DTI ROI Freewater ANTS Axial Diffusivity Middle Occipital Gyrus Transcallosal Tract Template Corrected 10^-3 mm^2/s
Brain Imaging Diffusion Tensor Imaging dti_fw_ants_middle_frontal_tcatt DTI ROI Freewater ANTS Middle Frontal Gyrus Transcallosal Tract Template 10^-3 mm^2/s
Brain Imaging Diffusion Tensor Imaging dti_fw_ants_fa_middle_frontal_tcatt_corrected DTI ROI Freewater ANTS Fractional Anisotropy Middle Frontal Gyrus Transcallosal Tract Template Corrected 10^-3 mm^2/s
Brain Imaging Diffusion Tensor Imaging dti_fw_ants_md_middle_frontal_tcatt_corrected DTI ROI Freewater ANTS Mean Diffusivity Middle Frontal Gyrus Transcallosal Tract Template Corrected 10^-3 mm^2/s
Brain Imaging Diffusion Tensor Imaging dti_fw_ants_rd_middle_frontal_tcatt_corrected DTI ROI Freewater ANTS Radial Diffusivity Middle Frontal Gyrus Transcallosal Tract Template Corrected 10^-3 mm^2/s
Brain Imaging Diffusion Tensor Imaging dti_fw_ants_ad_middle_frontal_tcatt_corrected DTI ROI Freewater ANTS Axial Diffusivity Middle Frontal Gyrus Transcallosal Tract Template Corrected 10^-3 mm^2/s
Brain Imaging Diffusion Tensor Imaging dti_fw_ants_middle_temporal_tcatt DTI ROI Freewater ANTS Middle Temporal Gyrus Transcallosal Tract Template 10^-3 mm^2/s
Brain Imaging Diffusion Tensor Imaging dti_fw_ants_fa_middle_temporal_tcatt_corrected DTI ROI Freewater ANTS Fractional Anisotropy Middle Temporal Gyrus Transcallosal Tract Template Corrected 10^-3 mm^2/s
Brain Imaging Diffusion Tensor Imaging dti_fw_ants_md_middle_temporal_tcatt_corrected DTI ROI Freewater ANTS Mean Diffusivity Middle Temporal Gyrus Transcallosal Tract Template Corrected 10^-3 mm^2/s
Brain Imaging Diffusion Tensor Imaging dti_fw_ants_rd_middle_temporal_tcatt_corrected DTI ROI Freewater ANTS Radial Diffusivity Middle Temporal Gyrus Transcallosal Tract Template Corrected 10^-3 mm^2/s
Brain Imaging Diffusion Tensor Imaging dti_fw_ants_ad_middle_temporal_tcatt_corrected DTI ROI Freewater ANTS Axial Diffusivity Middle Temporal Gyrus Transcallosal Tract Template Corrected 10^-3 mm^2/s
Brain Imaging Diffusion Tensor Imaging dti_fw_ants_cingulum DTI ROI Freewater ANTS Cingulum 10^-3 mm^2/s
Brain Imaging Diffusion Tensor Imaging dti_fw_ants_fa_cingulum_corrected DTI ROI Freewater ANTS Fractional Anisotropy Cingulum Corrected 10^-3 mm^2/s
Brain Imaging Diffusion Tensor Imaging dti_fw_ants_md_cingulum_corrected DTI ROI Freewater ANTS Mean Diffusivity Cingulum Corrected 10^-3 mm^2/s
Brain Imaging Diffusion Tensor Imaging dti_fw_ants_rd_cingulum_corrected DTI ROI Freewater ANTS Radial Diffusivity Cingulum Corrected 10^-3 mm^2/s
Brain Imaging Diffusion Tensor Imaging dti_fw_ants_ad_cingulum_corrected DTI ROI Freewater ANTS Axial Diffusivity Cingulum Corrected 10^-3 mm^2/s
Brain Imaging Diffusion Tensor Imaging dti_fw_ants_uf DTI ROI Freewater ANTS Uncinate Fasiculus 10^-3 mm^2/s
Brain Imaging Diffusion Tensor Imaging dti_fw_ants_fa_uf_corrected DTI ROI Freewater ANTS Fractional Anisotropy Uncinate Fasiculus Corrected 10^-3 mm^2/s
Brain Imaging Diffusion Tensor Imaging dti_fw_ants_md_uf_corrected DTI ROI Freewater ANTS Mean Diffusivity Uncinate Fasiculus Corrected 10^-3 mm^2/s
Brain Imaging Diffusion Tensor Imaging dti_fw_ants_rd_uf_corrected DTI ROI Freewater ANTS Radial Diffusivity Uncinate Fasiculus Corrected 10^-3 mm^2/s
Brain Imaging Diffusion Tensor Imaging dti_fw_ants_ad_uf_corrected DTI ROI Freewater ANTS Axial Diffusivity Uncinate Fasiculus Corrected 10^-3 mm^2/s
Brain Imaging Diffusion Tensor Imaging dti_fw_ants_slf DTI ROI Freewater ANTS Superior Longitudinal Fasiculus 10^-3 mm^2/s
Brain Imaging Diffusion Tensor Imaging dti_fw_ants_fa_slf_corrected DTI ROI Freewater ANTS Fractional Anisotropy Superior Longitudinal Fasiculus Corrected 10^-3 mm^2/s
Brain Imaging Diffusion Tensor Imaging dti_fw_ants_md_slf_corrected DTI ROI Freewater ANTS Mean Diffusivity Superior Longitudinal Fasiculus Corrected 10^-3 mm^2/s
Brain Imaging Diffusion Tensor Imaging dti_fw_ants_rd_slf_corrected DTI ROI Freewater ANTS Radial Diffusivity Superior Longitudinal Fasiculus Corrected 10^-3 mm^2/s
Brain Imaging Diffusion Tensor Imaging dti_fw_ants_ad_slf_corrected DTI ROI Freewater ANTS Axial Diffusivity Superior Longitudinal Fasiculus Corrected 10^-3 mm^2/s
Brain Imaging Diffusion Tensor Imaging dti_fw_ants_ilf DTI ROI Freewater ANTS Inferior Longitudinal Fasiculus 10^-3 mm^2/s
Brain Imaging Diffusion Tensor Imaging dti_fw_ants_fa_ilf_corrected DTI ROI Freewater ANTS Fractional Anisotropy Inferior Longitudinal Fasiculus Corrected 10^-3 mm^2/s
Brain Imaging Diffusion Tensor Imaging dti_fw_ants_md_ilf_corrected DTI ROI Freewater ANTS Mean Diffusivity Inferior Longitudinal Fasiculus Corrected 10^-3 mm^2/s
Brain Imaging Diffusion Tensor Imaging dti_fw_ants_rd_ilf_corrected DTI ROI Freewater ANTS Radial Diffusivity Inferior Longitudinal Fasiculus Corrected 10^-3 mm^2/s
Brain Imaging Diffusion Tensor Imaging dti_fw_ants_ad_ilf_corrected DTI ROI Freewater ANTS Axial Diffusivity Inferior Longitudinal Fasiculus Corrected 10^-3 mm^2/s
Brain Imaging Brain MRI: Cerebral Blood Flow (CBF) ROI -- PCASL asl_rest_grey_matter_hct Resting CBF Total Grey Matter Hematocrit Corrected mL/100 g/min
Brain Imaging Brain MRI: Cerebral Blood Flow (CBF) ROI -- PCASL asl_rest_left_hemisphere_hct Resting CBF Left Hemisphere Hematocrit Corrected mL/100 g/min
Brain Imaging Brain MRI: Cerebral Blood Flow (CBF) ROI -- PCASL asl_rest_right_hemisphere_hct Resting CBF Right Hemisphere Hematocrit Corrected mL/100 g/min
Brain Imaging Brain MRI: Cerebral Blood Flow (CBF) ROI -- PCASL asl_rest_left_frontal_lobe_hct Resting CBF Left Frontal Lobe Hematocrit Corrected mL/100 g/min
Brain Imaging Brain MRI: Cerebral Blood Flow (CBF) ROI -- PCASL asl_rest_right_frontal_lobe_hct Resting CBF Right Frontal Lobe Hematocrit Corrected mL/100 g/min
Brain Imaging Brain MRI: Cerebral Blood Flow (CBF) ROI -- PCASL asl_rest_left_temporal_lobe_hct Resting CBF Left Temporal Lobe Hematocrit Corrected mL/100 g/min
Brain Imaging Brain MRI: Cerebral Blood Flow (CBF) ROI -- PCASL asl_rest_right_temporal_lobe_hct Resting CBF Right Temporal Lobe Hematocrit Corrected mL/100 g/min
Brain Imaging Brain MRI: Cerebral Blood Flow (CBF) ROI -- PCASL asl_rest_left_parietal_lobe_hct Resting CBF Left Parietal Lobe Hematocrit Corrected mL/100 g/min
Brain Imaging Brain MRI: Cerebral Blood Flow (CBF) ROI -- PCASL asl_rest_right_parietal_lobe_hct Resting CBF Right Parietal Lobe Hematocrit Corrected mL/100 g/min
Brain Imaging Brain MRI: Cerebral Blood Flow (CBF) ROI -- PCASL asl_rest_left_occipital_lobe_hct Resting CBF Left Occipital Lobe Hematocrit Corrected mL/100 g/min
Brain Imaging Brain MRI: Cerebral Blood Flow (CBF) ROI -- PCASL asl_rest_right_occipital_lobe_hct Resting CBF Right Occipital Lobe Hematocrit Corrected mL/100 g/min
Brain Imaging Brain MRI: Cerebral Blood Flow (CBF) ROI -- PCASL asl_chall_grey_matter_hct Challenge CBF Total Grey Matter Hematocrit Corrected mL/100 g/min
Brain Imaging Brain MRI: Cerebral Blood Flow (CBF) ROI -- PCASL asl_chall_left_hemisphere_hct Challenge CBF Left Hemisphere Hematocrit Corrected mL/100 g/min
Brain Imaging Brain MRI: Cerebral Blood Flow (CBF) ROI -- PCASL asl_chall_right_hemisphere_hct Challenge CBF Right Hemisphere Hematocrit Corrected mL/100 g/min
Brain Imaging Brain MRI: Cerebral Blood Flow (CBF) ROI -- PCASL asl_chall_left_frontal_lobe_hct Challenge CBF Left Frontal Lobe Hematocrit Corrected mL/100 g/min
Brain Imaging Brain MRI: Cerebral Blood Flow (CBF) ROI -- PCASL asl_chall_right_frontal_lobe_hct Challenge CBF Right Frontal Lobe Hematocrit Corrected mL/100 g/min
Brain Imaging Brain MRI: Cerebral Blood Flow (CBF) ROI -- PCASL asl_chall_left_temporal_lobe_hct Challenge CBF Left Temporal Lobe Hematocrit Corrected mL/100 g/min
Brain Imaging Brain MRI: Cerebral Blood Flow (CBF) ROI -- PCASL asl_chall_right_temporal_lobe_hct Challenge CBF Right Temporal Lobe Hematocrit Corrected mL/100 g/min
Brain Imaging Brain MRI: Cerebral Blood Flow (CBF) ROI -- PCASL asl_chall_left_parietal_lobe_hct Challenge CBF Left Parietal Lobe Hematocrit Corrected mL/100 g/min
Brain Imaging Brain MRI: Cerebral Blood Flow (CBF) ROI -- PCASL asl_chall_right_occipital_lobe_hct Challenge CBF Right Occipital Lobe Hematocrit Corrected mL/100 g/min
Brain Imaging Brain MRI: Cerebral Blood Flow (CBF) ROI -- PCASL asl_reac_left_occipital_lobe_hct Reactivity CBF Left Occipital Lobe Hematocrit Corrected mL/100 g/min
Brain Imaging Brain MRI: Cerebral Small Vessel Disease Markers swi_microbleeds_number Total Number of Microbleeds This variable is identical to `swi.microbleeds.number` with any plus (+) sign removed from the values and blank values and values of -9999 set to NA.
Brain Imaging Brain MRI: Cerebral Blood Flow (CBF) ROI -- PCASL asl_reac_right_parietal_lobe_hct Reactivity CBF Right Parietal Lobe Hematocrit Corrected mL/100 g/min
Brain Imaging Brain MRI: Cerebral Blood Flow (CBF) ROI -- PCASL asl_chall_right_parietal_lobe_hct Challenge CBF Right Parietal Lobe Hematocrit Corrected mL/100 g/min
Brain Imaging Brain MRI: Cerebral Blood Flow (CBF) ROI -- PCASL asl_reac_grey_matter_hct Reactivity CBF Total Grey Matter Hematocrit Corrected mL/100 g/min
Brain Imaging Brain MRI: Cerebral Blood Flow (CBF) ROI -- PCASL asl_reac_left_hemisphere_hct Reactivity CBF Left Hemisphere Hematocrit Corrected mL/100 g/min
Brain Imaging Brain MRI: Cerebral Blood Flow (CBF) ROI -- PCASL asl_reac_right_hemisphere_hct Reactivity CBF Right Hemisphere Hematocrit Corrected mL/100 g/min
Brain Imaging Brain MRI: Cerebral Blood Flow (CBF) ROI -- PCASL asl_reac_left_parietal_lobe_hct Reactivity CBF Left Parietal Lobe Hematocrit Corrected mL/100 g/min
Brain Imaging Brain MRI: Cerebral Blood Flow (CBF) ROI -- PCASL asl_chall_left_occipital_lobe_hct Challenge CBF Left Occipital Lobe Hematocrit Corrected mL/100 g/min
Brain Imaging Brain MRI: Cerebral Blood Flow (CBF) ROI -- PCASL asl_reac_left_frontal_lobe_hct Reactivity CBF Left Frontal Lobe Hematocrit Corrected mL/100 g/min
Brain Imaging Brain MRI: Cerebral Blood Flow (CBF) ROI -- PCASL asl_reac_right_frontal_lobe_hct Reactivity CBF Right Frontal Lobe Hematocrit Corrected mL/100 g/min
Brain Imaging Brain MRI: Cerebral Blood Flow (CBF) ROI -- PCASL asl_reac_left_temporal_lobe_hct Reactivity CBF Left Temporal Lobe Hematocrit Corrected mL/100 g/min
Brain Imaging Brain MRI: Cerebral Blood Flow (CBF) ROI -- PCASL asl_reac_right_temporal_lobe_hct Reactivity CBF Right Temporal Lobe Hematocrit Corrected mL/100 g/min
Brain Imaging Brain MRI: Cerebral Blood Flow (CBF) ROI -- PCASL asl_reac_right_occipital_lobe_hct Reactivity CBF Right Occipital Lobe Hematocrit Corrected mL/100 g/min
Brain Imaging Brain MRI: Cerebral Small Vessel Disease Markers lacunar_infarcts_number Number of Lacunar Infarcts
Brain MRI: Cerebral Blood Flow (CBF) ROI -- PCASL Brain MRI: Cerebral Small Vessel Disease Markers Brain MRI: Grey Matter Volume (T1) Brain MRI: White Matter Hyperintensities (FLAIR) Diffusion Tensor Imaging
Cardiac Strain -- MRI Cardiac Structure and Function -- Echocardiogram Cardiac Structure and Function -- MRI
Demographics Medical History record_info
Cognitive Complaint Module Neuropsychological Assessment
Blood-based Research Biomarkers Cerebrospinal Fluid (CSF) Research Biomarkers
APOE Genotype


Variable: apoe4count

Description: Count of ApoE E4 alleles


Unit:


Derivation:

The number of ApoE E4 alleles.


Distribution:

  • Epoch 1 = baseline
  • Epoch 2 = 18-month
  • Epoch 3 = 3 years
  • Epoch 4 = 5 years
  • Epoch 5 = 7 years
  • Epoch 6 = 9 years
APOE Genotype